Page 181 - 2018_IFC

FIRE PROTECTION AND LIFE SAFETY SYSTEMS

915.4.4 Combination alarms. Combination carbon mon- shall initiate a trouble signal at an approved location if the
oxide/smoke alarms shall be an acceptable alternative to power supply is interrupted.
carbon monoxide alarms. Combination carbon monoxide/
smoke alarms shall be listed in accordance with UL 2034 916.6 Sensor locations. Sensors shall be installed in approved
and UL 217. locations where leaking gases are expected to accumulate.
916.7 Gas sampling. Gas sampling shall be performed con-
915.5 Carbon monoxide detection systems. Carbon monox-
ide detection systems shall be an acceptable alternative to tinuously. Sample analysis shall be processed immediately
carbon monoxide alarms and shall comply with Sections after sampling, except as follows:
915.5.1 through 915.5.3. 1. For HPM gases, sample analysis shall be performed at
915.5.1 General. Carbon monoxide detection systems intervals not exceeding 30 minutes.
shall comply with NFPA 720. Carbon monoxide detectors 2. For toxic gases that are not HPM, sample analysis shall
shall be listed in accordance with UL 2075.
be performed at intervals not exceeding 5 minutes, in
915.5.2 Locations. Carbon monoxide detectors shall be accordance with Section 6004.2.2.7.
installed in the locations specified in Section 915.2. These 3. Where a less frequent or delayed sampling interval is
locations supersede the locations specified in NFPA 720.
approved.
915.5.3 Combination detectors. Combination carbon
monoxide/smoke detectors installed in carbon monoxide 916.8 System activation. A gas detection alarm shall be initi-
detection systems shall be an acceptable alternative to car- ated where any sensor detects a concentration of gas exceed-
bon monoxide detectors, provided that they are listed in ing the following thresholds:
accordance with UL 2075 and UL 268. 1. For flammable gases, a gas concentration exceeding 25
915.6 Maintenance. Carbon monoxide alarms and carbon percent of the lower flammability limit (LFL).
monoxide detection systems shall be maintained in accor- 2. For nonflammable gases, a gas concentration exceeding
dance with NFPA 720. Carbon monoxide alarms and carbon one-half of the IDLH, unless a different threshold is
monoxide detectors that become inoperable or begin produc- specified by the section of this code requiring a gas
ing end-of-life signals shall be replaced. detection system.
915.6.1 Enclosed parking garages. Carbon monoxide Upon activation of a gas detection alarm, alarm signals or
and nitrogen dioxide detectors installed in enclosed park- other required responses shall be as specified by the section
ing garages in accordance with the International Mechani- of this code requiring a gas detection system. Audible and
cal Code, Section 404.1 shall be maintained in accordance visible alarm signals associated with a gas detection alarm
with the manufacturer’s instructions and their listing. shall be distinct from fire alarm and carbon monoxide alarm
Detectors that become inoperable or begin producing end- signals.
of-life signals shall be replaced.
916.9 Signage. Signs shall be provided adjacent to gas detection
** system alarm signaling devices that advise occupants of the
SECTION 916 nature of the signals and actions to take in response to the signal.
GAS DETECTION SYSTEMS
916.10 Fire alarm system connections. Gas sensors and gas
916.1 Gas detection systems. Gas detection systems required detection systems shall not be connected to fire alarm sys-
by this code shall comply with Sections 916.2 through tems unless approved and connected in accordance with the
916.11. fire alarm equipment manufacturer’s instructions.
916.2 Permits. Permits shall be required as set forth in Sec- 916.11 Inspection, testing and sensor calibration. Inspec-
tion 105.7.11. tion and testing of gas detection systems shall be conducted
not less than annually. Sensor calibration shall be confirmed
916.2.1 Construction documents. Documentation of the
gas detection system design and equipment to be used that at the time of sensor installation and calibration shall be per-
demonstrates compliance with the requirements of this formed at the frequency specified by the sensor manufacturer.
code shall be provided with the application for permit.
916.3 Equipment. Gas detection system equipment shall be SECTION 917
designed for use with the gases being detected and shall be MASS NOTIFICATION SYSTEMS
installed in accordance with manufacturer’s instructions.
917.1 College and university campuses. Prior to construction
916.4 Power connections. Gas detection systems shall be of a new building requiring a fire alarm system on a multiple-
permanently connected to the building electrical power sup-
ply or shall be permitted to be cord connected to an building college or university campus having a cumulative
building occupant load of 1,000 or more, a mass notification
unswitched receptacle using an approved restraining means
that secures the plug to the receptacle. risk analysis shall be conducted in accordance with NFPA 72.
Where the risk analysis determines a need for mass notifica-
916.5 Emergency and standby power. Standby or emer- tion, an approved mass notification system shall be provided in
gency power shall be provided or the gas detection system accordance with the findings of the risk analysis.

148 2018 INTERNATIONAL FIRE CODE ®
Copyrighted © 2017 by, or licensed to, ICC (ALL RIGHTS RESERVED); licensed to UL, LLC pursuant to License Agreement with ICC. No further reproductions authorized or distribution authorized.
ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT; AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.